Daily Water Supply
| Related Links | |
|---|---|
| Water Storage in Perth's Dams | |
| Statewide Dam Storage Levels - Current storage information for all our dams and reservoirs | |
| Daily rainfall in Perth | |
| Rainfall at Perth's Dams | |
| Yearly Streamflow - early Streamflow for Major Surface Water Sources | |
Water Supplied Daily to the Perth Metropolitan area (plus parts of the South West Region) over the past Six Months
Water Supplied Daily to the Perth Metropolitan Area plus part of the South West Region for the 24 hrs up to 9am on 4 July 2008
The total supplied today: 443.4 megalitres (ML)
Water Supplied Daily to the Perth Metropolitan area (plus parts of the South West Region) during the last Seven Days
| Date | 28 Jun | 29 Jun | 30 Jun | 1 Jul | 2 Jul | 3 Jul | 4 Jul |
| Supplied to Perth metropolitan area | 420.9 | 455.5 | 465.4 | 436.0 | 481.5 | 468.9 | 421.5 |
| Supplied to Other Areas * | 18.9 | 19.6 | 20.1 | 25.6 | 20.9 | 18.4 | 21.9 |
| Total supplied daily (ML) | 439.8 | 475.1 | 485.5 | 461.6 | 502.4 | 487.3 | 443.4 |
* Only includes water provided by Perth's dams to parts of Harvey, Mandurah, Pinjarra and Carcoola.
The most water supplied to the Perth Metropolitan area (excluding Mandurah/Pinjarra) during any single day was 1,259 ML on 31 January 1991. The temperature on that day was 45.8 degrees.
In the 2004/2005 financial year, the average daily volume of water used by each residential water service in Perth was 764 litres. The residential per capita consumption was 296 litres each day.
Click here for an explanation of the units used to specify water supply.
Remember, Be Waterwise
Use water wisely in your home and garden. Help to conserve Perth's precious water resources for the future. See Waterwise Guide to Gardens, Waterwise Guide to Lawns, Waterwise Guide to Irrigation and Waterwise Guide to High Efficiency Shower Heads.
Sources of Perth's Water
Water in the metropolitan area comes from three sources:
- Surface water is obtained from dams (storage reservoirs) on rivers in the Darling Range. Surface water sources supply approximately 27% of the Perth region's water.
The dams supplying water to Perth, Mandurah, Pinjarra and the Goldfields and Agricultural regions are Canning, Serpentine, Serpentine Pipehead, Conjurunup Pipehead, Victoria, Mundaring Weir, South Dandulup, North Dandalup, Wungong, Stirling and Churchman's Brook. Note that Mundaring Weir normally only supplies water to the Goldfields and Agricultural Region. - Groundwater, supplying approximately 56% through the integrated system, is obtained from huge natural reservoirs in the deep sands of the coastal plain. Groundwater is treated at groundwater treatment plants at Jandakot, Mirrabooka, Wanneroo, Neerabup, Lexia and Gwelup.
- The Perth Seawater Desalination Plant in Kwinana, opened by the Premier Mr Alan Carpenter on 18 April 2007, is now Perth's largest single source of water, supplying approximately 17% of the city's water needs.
Units Used to Specify Water Supply
Water Supply is quoted in Megalitres (ML)
| One Megalitre | = | one thousand kilolitres | |
| One Megalitre | = | one million litres | |
| One kilolitre | = | one thousand litres | |
| One kilolitre of water | = | one thousand kilograms | = one tonne |
Click here for information on Water Storage in Perth's Dams.
Click here for information on daily rainfall in Perth.
Click here for information on Rainfall at Perth's Dams.
Click here for information on Yearly Streamflow for Major Surface Water Sources.